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3吨牛粪可加工成1吨有机肥
2017-08-14 07:43:36 中国青年网
在青白江区清泉镇金龙村4组,200余亩玉米正在收割。“这些都是奶牛的有机口粮。不施化肥、不打农药。” 青白江区一家大型农牧企业牧场长丁帅告诉成都晚报记者,这是奶牛不可或缺的饲料。记者走进牧场看见,在一个单栋牛舍中,近百头奶牛正悠闲地咀嚼着草料。1头成年奶牛每天要排泄约25公斤粪便,这个养有1400多头奶牛的养殖场每天要产生80吨粪便。不过,庞大的养殖场内并没有难闻的气味。记者了解到,这是青白江区探索生态循环养殖带来的效果。
在有机肥生产车间,牛粪成功“变身”。“你闻闻,没一点臭味。”丁帅随手抓起一把黑褐色物质,放在鼻子下方闻了闻,“3吨牛粪可以加工成1吨有机肥。有机肥批发价为800元一吨,并且还供不应求。”记者了解到,液态排泄物经过沼气发酵,一部分作为“有机液态肥料”直接还田,用于浇灌牧场周边200亩玉米地,每年为奶牛奉献600余吨口粮,另外一部分进入二级生化池,经过处理达到农灌标准后成为农用水。“国家提倡种养循环,通过推进畜禽养殖废弃物处理和资源化,就地就近转化成农村能源和农用肥料。”丁帅表示正在与青白江区水务局合作,铺设管网,力争让沼液作为“有机液态肥料”直接全部还田。成都晚报记者 黄尚斐
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